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Teledyne API - Model 200EH/EM Operation Manual Operating Instructions
153
6.15.4.6. Setting Hessen Protocol Status Flags
Teledyne Instruments’ implementation of Hessen protocols includes a set of status bits that are included in
responses to inform the host computer of the M200EH/EM’s condition. The default settings for these bit/flags
are:
Table 6-36: Default Hessen Status Bit Assignments
NOTES:
It is possible to assign more than one flag to the same Hessen status bit. This allows
the grouping of similar flags, such as all temperature warnings, under the same status
bit.
Be careful not to assign conflicting flags to the same bit as each status bit will be
triggered if any of the assigned flags is active.
STATUS FLAG NAME DEFAULT BIT ASSIGNMENT
WARNING FLAGS
SAMPLE FLOW WARNING 0001
OZONE FLOW WARNING 0002
RCELL PRESS WARN 0004
BOX TEMP WARNING 0008
RCELL TEMP WARNING 0010
PMT TEMP WARNING 0040
CONVERTER TEMP WARNING 0080
WARMUP MODE 1000
INVALID CONC 8000
OPERATIONAL FLAGS
In Manual Calibration Mode 0200
In O
2
Calibration Mode 0400
In Zero Calibration Mode 0400
In Low Span Calibration Mode 0800
In Span Calibration Mode 0800
UNITS OF MEASURE FLAGS
UGM 0000
MGM 2000
PPB 4000
PPM 6000
SPARE/UNUSED BITS 0020, 0100
UNASSIGNED FLAGS
Box Temp Warning Front Panel Warning
System Reset Analog Cal Warning
Rear Board Not Detected Cannot Dyn Zero
Relay Board Warning Cannot Dyn Span
Manifold Temp Warn O
2
Cell Temp Warn
Ozone Gen Off AutoZero Warning
Conc Alarm 1 Conc Alarm 2
HVPS Warning In MP Calibration Mode
04521C (DCN5731)